IMHO John hit it first shot. Go as far as you can, test if you can, and use a filter to snag suspended detrius. Then wear a mask. I exhaust outside in the winter when it's not around zero. In the summer I have a final filter that is in the vent that returns air from the Separator, and the collector. Then I run an air filter. I also avoid most wood the I'm sensitive to or know to be harmful. Add the mask when I need it and I'm as good as I'm gonna get and that's ok. Love Phil's separator by the way. I hate changing those bags under the collector.
Teaching grandchildren the hobby is rewarding. Most of the time